I can make a legitimate case for tariffs and national security for some things, if we're talking about an exercise in good faith.
You want to slap tariffs on China for electronics, to force American companies to manufacture everything start to finish here in the US, to prevent China from putting in codes and listenting devices into fucking everything and spying on us, and preventing them from constantly tealing our intellectual property? Well ok. You want to force companies to move supply chain for pharmacitcals here, in case we go to war with someone who produces 90% of our insulin, as a simple illustration? Sure. The idea is to spur domestic production of things that could be a real problem if one day the US woke up and didn't have access to things anymore.
But the Republican Party isn't interested in actually playing this game/exercise in good faith. Otherwise they wouldn't be fucking talking about rescinding the motherfucking CHIPS act. It's about placating their orange diety, grifting, throwing a tantrum, or all 3.